Combined gas law problems

1. Initially I have a gas at a pressure of 12 atm, and a volume of 23L, when the gas is at a temperature of 200 Kelvin, if I raise the pressure of the gas to 14 atm, and increase the temperature to 300 kelvin, what is my new volume of the gas?

What is the percent composition of ca(oh)2? 37.7% ca, 53.0% o, and 10.3% h 45.5% ca, 38.2% o, and 16.3% h 54.0% ca, 43.0% o, and 2.7% h 64.7% ca, 27.0% o, and 8.3% h

The density of the solid phase of a substance is 0.90 g/cm3 and the density of the liquid phase is 1.0 g/cm3. a large increase in pressure will a. lower the freezing point b. raise the freezing point c. lower the boiling point d. raise the triple point e. lower the triple point

Volume is a measurement of how fast particles of a substance are moving